What kind of data can be transmitted by APRS?
The correct answer is D: All these choices are correct. APRS (Automatic Packet Reporting System) can transmit GPS position data, text messages, and weather data. APRS is a digital communications system that sends various types of data over packet radio. Position data allows tracking of mobile stations, text messages enable messaging, and weather data from weather stations can be shared. For amateur radio operators, APRS is a versatile system used for position reporting, messaging, weather reporting, and emergency communications. Understanding APRS capabilities helps when setting up APRS stations and using APRS features.
Exam Tip
APRS transmits all: GPS position, text messages, weather data. When all listed data types are transmitted by APRS, 'all of the above' is usually the answer. APRS is a versatile data system.
Memory Aid
"APRS transmits all: GPS position, Text messages, Weather data. Think 'A'PRS = 'A'll 'P'acket 'R'eporting 'S'ystems. Versatile digital data system for position, messaging, and weather."
Real-World Application
Your APRS station transmits your GPS position every few minutes, allowing others to see your location on APRS maps. You can also send text messages to other APRS users, and if you have a weather station, it can transmit weather data. All this information travels over the same APRS network, making it a comprehensive data communications system.
Key Concepts
Why Other Options Are Wrong
Option A (GPS position data): While correct, this is incomplete. APRS also transmits text messages and weather data.
Option B (Text messages): While correct, this is incomplete. APRS also transmits GPS position and weather data.
Option C (Weather data): While correct, this is incomplete. APRS also transmits GPS position and text messages.
题目解析
The correct answer is D: All these choices are correct. APRS (Automatic Packet Reporting System) can transmit GPS position data, text messages, and weather data. APRS is a digital communications system that sends various types of data over packet radio. Position data allows tracking of mobile stations, text messages enable messaging, and weather data from weather stations can be shared. For amateur radio operators, APRS is a versatile system used for position reporting, messaging, weather reporting, and emergency communications. Understanding APRS capabilities helps when setting up APRS stations and using APRS features.
考试技巧
APRS transmits all: GPS position, text messages, weather data. When all listed data types are transmitted by APRS, 'all of the above' is usually the answer. APRS is a versatile data system.
记忆口诀
APRS transmits all: GPS position, Text messages, Weather data. Think 'A'PRS = 'A'll 'P'acket 'R'eporting 'S'ystems. Versatile digital data system for position, messaging, and weather.
实际应用示例
Your APRS station transmits your GPS position every few minutes, allowing others to see your location on APRS maps. You can also send text messages to other APRS users, and if you have a weather station, it can transmit weather data. All this information travels over the same APRS network, making it a comprehensive data communications system.
错误选项分析
Option A (GPS position data): While correct, this is incomplete. APRS also transmits text messages and weather data. Option B (Text messages): While correct, this is incomplete. APRS also transmits GPS position and weather data. Option C (Weather data): While correct, this is incomplete. APRS also transmits GPS position and text messages.
知识点
APRS, Automatic Packet Reporting System, GPS data, Digital messaging
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.